1.

Diborane react with ammonia under different conditions to give a variety of products. Which one among the following is not formed in these reactions

Answer»

`B_(2)H_(6).2NH_3`
`B_(12)H_(12)`
`B_(3)N_(3)H_6`
`(BN)_n`

Solution :`B_(2)H_(6)+2NH_(3)OVERSET("LOW TEMP(120^@C))rarrB_(2)H_(6).2NH_(3)`
`3B_(2)H_(6)+6NH_(3)overset(200^@C)rarr2B_(3)N_(3)H_(6)+12H_(2)`
`B_(2)H_(6)+NH_(3)overset("very high temp")rarr(BN)_n`
`:. B_(12)H_(12)` is not formed


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